Carburetor



Nov. 22, 1932. Y, ls. STEINHARDT QARBUMITOR Filed Aug. .9, 1930 he faqs ATTO Patented Nov. 1932 UNITED STATES mme emmer, or nizw Your, N. Y.

GARBUBETOB 'appiioatioa'mea um a, leso. :erm no. man.

This invention relates to an improvement in carburetor for ex losive engines.

'In en 'nes used or driving automobiles and the llke it is a known fact that when the 5 automobile is travelling at good speed along a level highway the explosive mixture furnished by the carburetor may advantageously be considerably leaner than when e-ene is o erating at slower speeds or when 'ving t e vehicle vup an incline, also that where the carburetor of the engine feeds its gasoline into the air blast through an aperture of a given size the resultant mixture of air and as is relatively leaner at low speeds more or less specific than those referred to` above, will be in part obvious and in part pointed out in the course of the following description of the elements, combinations, arrangements of parts and applications of principles constituting the invention; and the scope of protection contemplated will be indicated in the appended claims.

In the accompanying drawing which is to be taken as a part of this specification, and' in which I have shown merely a preferred form of embodiment of the invention, there is illustrated a dia ammatic view of a carburetor device em odying this invention'and showing the same in operative association with an explosive en e. y

. Referringto the rawing for describin in detail the exemplary structure illustrate 50 keeping the gasoline level constant within-the' therein, the reference character L indicates the intae manifoldof an ordinary explosive e I 4 .p i,

a e carburetor, indicated nerally the reference character H, inclu esthe usua g oline reservoir 1 containing the float 2' for gasoline jet 3. The jet 3 is arranged within the Venturi tube 4 which communicates with the passa e 5 within which is arranged the throttle vadve 6.

Gasoline enters the reservoir 1 through a tube as 7, anda supply ofair enters through a pipe as 8 which communicates with the bottom end of the Venturi tube. g

The usual operating rod 9 is'connected with the throttle valve, as by means of the radial arm 10 fixed to the shaft 'of said valve for manually controlling the movements of the throttle valve in the customary wa Whenever the throttle valve 6 1s rotated 8 open to admit a larger. volume of explosive mixture into the cy inders for acceleratin the speed of the engine the increased speed o the pistons causes the blast of air surging around the 'et 3 within the Venturi tube to be increase in velocity thereby tearing 0E from the jet relatively more gasoline2 proportionate toA the volume of air passing 1n a given period, than was -torn of at the lower speed at which the engine had been previously running.v v f v The mcnease -1n Vproportion of gas to air would continue to grow greater progressively unless .means be provided to prevent it.

To this end the present invention proposes the use of a gasoline needle 11 or other suitablem'eans arranged for controlling the amount ofl gasoline which may pass out of the jet 3 under differing conditions. For convenience of illustration the needle 11 is herein shown to be directly within the gasoline jet and to be longitudinally slidably mounted to move toward and away from the jet orifice 12. When this needle is in a relatively lower position the orifice 12 willvbe relatively unobstructed so that gasoline may pass freely therethrough in the customary manner, but when the needle is raised it will obstruct the orifice more or less according to the degree 4to which the needle is raised.

The lower portion of the needle extends slidably through the bottom wall portion 1,8 of the jet and a projecting partas 14 rests upon the upper surface of an actuating member 15. A spring 16 is illustrated'for urging `the needle always downwardly against the actuating member.

The actuating member is pivotally connected by one of its ends as at 17 with a lever 18 which in turnis pivotally mounted as at 19 upon the wall of the carburetor and extends upwardl into co-o erative relation with an arm 20 ed to the s aft of the throttle valve.

The o posite end of the actuating member is rovi ed with a beveled surface 21 at its un erside which rests upon the correspondingly bevelled up r surface 22 of a slide member 23. The s ide member 23 is mounted to slide horizontally in a suitable support as 24 and is adapted to be slid throu h the action of a governor device25 driven y a shaft 26 which is cou led with a moving part of the en e G, or instance the main drive shaft 2 of said engine, through a drive belt VThe operation of this mechanism is as follows: It being noted that the position of theslide 23 with respect to the actuating member is always determined by the speed of the engine an that the position of the actuating member is in turn always dependent upon the position of the throttle valve. Whenever the throttle valve is o rated toward open osition the arm swing the llever 18 a out its pivot and cause the actuating member to move horizontally toward the right, in the drawing. Owing to the fact that the actuating member rests upon the inclined surface 22 of the slide 23 its movement to the right will be accompanied by a slight downward swin about the pivot 17 thereb lowering the gaso ine ,needle 11 away from tlie orifice 12 so that an amplequantity of gasoline ma move through said orifice for suitably enric ening the air blast passing through the Venturi tube at this moment.

If at this time the automobile be assailing lthe task of climbing an incline so that the speed of the engine will' not be accelerated the increased charge of gasoline will be beneficial in enabling the engine to develop the required power for accomplishin its appointed task.

If on the other han the grade is only slight, o r none is present, so that the speed of the en e may be accelerated, then the acceleration of speed beingtransmitted to the governor device 25, will cause the slide 23 to moveto the right, in the drawing, and its inclined surface 22 to raise the actuating member and lift the gasoline needle 11 to a degree dependent upon the extent of acceleration and increasing rogressively as the acceleration increases. e orifice 12 will be closed proportionally and the mixture correspondingly reduced in richness as the speed increases.

If a hill be encountered while the engine is running at hi h speed, as just so that the spee of the engine diminishes, then the slowin down of the governor device will allow tg indicated,

e needle 11 to move further be Lasagne open and thereby provide a suitably enlarged passage-way through the orifice 12 calculated to afford just the correct strength of mixturev viding an air passage, a gasoline jet withinv said air passage, a throttle valve, a Icontrol member for determining the outlet size of'` the gasoline jet, a speed controlled governor device having means by which it may be driven from the engine shaft, and connections between the throttle valve, the governor device andsaid control member to operate the control member in response to both the movements of the throttle valve andA the speed of the engine, and add said connections including a pair of movable wedge acting,

parts having relatively inclined surfaces engaging against. each other one of said parts eing connected to be moved in response to movements of the throttle valve and the other t of said parts being connected to be moved in response to operation of the governor device. 2. A carburetor comprising means providing an air passage, a asoline jet within said air assage, a thrott e valve, a control member or determining the outlet size of the gasoline jet, a speed controlled governor device having means by which it may be driven from the engine shaft, spring means urging the control member toward open position, an actuating member for said control member, a lever connected between said actuating member and the throttle valve operable to permit movement of the control member by` said spring meanstoward open position by opening movement of the throttle valve, and

connections between the governor device and said actuating member operable to effect movement of the control member against the pressure of said-"spring means toward closed position in consequence of an increase in speed of the engine shaft. e

3. A carburetor comprising means providins an air passage, a gasoline jet within'said ai assage, a throttle valve, a control member or determining the outlet .size of the gasoline jet, a speed controlled governor device the en ineshaft and connectionsvbetween the thrott e valve, tli control member to operate the control memr in response to both the movements of the iso e governor device and said having means by which it may be driven from v throttle valve vand the speed of the engine, said connections including a pair of movable Wedge acting parts having relatively inclined surfaces slidably engaging against each u. other, one of said parts being connected to be moved in response to movements of the throttle valve and having connection with the contr'ol member to in turn move the control member in response to movements of the throttle valve, said mentioned part being alsomovable to move the control member. independently of movement of the throttle member, the other of said parts vbeing connected to be moved in response to operation of the governor device, and the slidably en aging inclined surfaces of said two arts eing disposed to effect movement oft e first part and of the control member from the'gover'nor device independently of movement of the throttle member.

` 4. A carburetorl comprising means providing' an air passage, a gasoline jet withinsaid air passage, a throttle valve, a control member for determining the outlet size of the gasoline jet, a speed controlled governor device having means by which it vmay be driven from the engine shaft, and connections between the throttle valve, the governor device and said control member 'to operate thecontrol member in response to both the movements ofthe throttle valve and the speed of the engine,

said connections including: a pair of relatively movable. parts one connected to be moved in res onse to movements of the throttle valve and liaving engagement with the control member to in turn move the control member said movable member with' respect to said actuating member for thereb lcausing the wedge acting surfaces of sai movable and i .In testimony whereof I aiiixm si nature.

IRYlNG STEIN A DT.

in response to movements of the throttle c valve, saidmentioned part being also movable to move the control member independently of movement of the throttle valve, and the other of said parts bein .connected to be operated by the governor evice and having engagement with the 'first part to move the first part in a manner to effect. movement of the control member independently of movement of the throttle valve. r

5. A carburetor comprising means providing an air passage, a g'asoline jet within said air passage, a throttle valve, a control membe r f0.1` determining the outlet size of the gasoline jet, a speed controlled governor device having means by which it may be driven from the engine .shaft an actuating member for said control memb which said actuating member slidably ener, a movable member with gages, said actuating member and said'movc v nections between the actuating 'member and the throttle valve bywhich to slide the actuating member for moving the control memmember and said governor device whereby' operation of the governor device will mov* -able member having co-operative wedge act- 'L Iing surfaces slidably engaging together, conlasr 

